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Decrease error in Timeout test due to ISR latency 

Increase the Timeout period from 1ms to 10ms so interrupt latency has
1/10th the effect on the measurement. This prevents failures due to
interrupt latency causing a drift.
pull/5063/head
Russ Butler 2017-09-09 19:00:07 -05:00
parent d9aff6f0dd
commit 30450d40d6
1 changed files with 5 additions and 5 deletions
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10
TESTS/mbed_drivers/timeout/main.cpp
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@ -36,7 +36,7 @@
using namespace utest::v1; using namespace utest::v1;
#define ONE_MILLI_SEC 1000 #define PERIOD_US 10000
volatile int ticker_count = 0; volatile int ticker_count = 0;
volatile uint32_t callback_trigger_count = 0; volatile uint32_t callback_trigger_count = 0;
@ -44,7 +44,7 @@ static const int test_timeout = 240;
Timeout timeout; Timeout timeout;
void set_incremeant_count() { void set_incremeant_count() {
timeout.attach_us(set_incremeant_count, ONE_MILLI_SEC); timeout.attach_us(set_incremeant_count, PERIOD_US);
++callback_trigger_count; ++callback_trigger_count;
} }
@ -56,7 +56,7 @@ void test_case_timeout() {
uint8_t results_size = 0; uint8_t results_size = 0;
greentea_send_kv("timing_drift_check_start", 0); greentea_send_kv("timing_drift_check_start", 0);
timeout.attach_us(set_incremeant_count, ONE_MILLI_SEC); timeout.attach_us(set_incremeant_count, PERIOD_US);
// wait for 1st signal from host // wait for 1st signal from host
do { do {
@ -64,11 +64,11 @@ void test_case_timeout() {
expected_key = strcmp(_key, "base_time"); expected_key = strcmp(_key, "base_time");
} while (expected_key); } while (expected_key);
greentea_send_kv(_key, callback_trigger_count * ONE_MILLI_SEC); greentea_send_kv(_key, callback_trigger_count * PERIOD_US);
// wait for 2nd signal from host // wait for 2nd signal from host
greentea_parse_kv(_key, _value, sizeof(_key), sizeof(_value)); greentea_parse_kv(_key, _value, sizeof(_key), sizeof(_value));
greentea_send_kv(_key, callback_trigger_count * ONE_MILLI_SEC); greentea_send_kv(_key, callback_trigger_count * PERIOD_US);
//get the results from host //get the results from host
greentea_parse_kv(_key, _value, sizeof(_key), sizeof(_value)); greentea_parse_kv(_key, _value, sizeof(_key), sizeof(_value));